filters 2.54 released with these changes

  • Fix UTF-8 handling in uniencode. Closes: #508003 Thanks, Marius Gavrilescu.
  • Improve layout and build process. Thanks, Marius Gavrilescu.
  • Replace fread with getchar in nethackify. Thanks, Marius Gavrilescu.
  • Fix NAME section of manpage. Closes: #775035 Thanks, Marius Gavrilescu.
  • Remove SAMPLES file for deterministic builds.
  • Makefile: Propagate input CFLAGS and LDFLAGS through to the compiler to allow eg, building with hardening. Thanks, Marius Gavrilescu.